(NewsNation) — Lawmakers on Capitol Hill are gathering for a classified briefing on unidentified aerial phenomena in the latest push for answers from the Pentagon about whistleblower allegations of a secret UFO-retrieval program.

A few members, both Republican and Democrat, from the House UAP Caucus, a bipartisan group, will attend the event. They will be briefed by two people from the All-domain Anomaly Resolution Office, or AARO, the Pentagon department tasked with investigating reports of unidentified objects in the sky.

Because the briefing is classified, it’s unlikely the media will get any details about what was discussed. This is the third such classified briefing in the last few months that the newly formed caucus has been able to put together.

One was done by the Department of Defense and the other by the intelligence community. This follows an expansive report from the AARO that detailed the government’s history with investigating UAP but said the government has no evidence of alien activity connected to the phenomena.

Some members in the briefing have expressed skepticism over the contents of the report, so there may be some back-and-forth around that in the room.

Rep. Tim Burchett, R-Tenn., told NewsNation’s Joe Khalil his expectations for the meeting are low.

“We’ve been like a rat chasing our tail, time and time again; we’re told this is the one where it’s gonna happen. And, of course, it’s absolutely not,” Burchett said. “These folks are putting out that it’s a bunch of false information, yet they spend tens of millions of dollars.”

After the prior briefings, NewsNation spoke to lawmakers as they exited. While they couldn’t share details, representatives expressed they were disappointed in the first briefing but did feel they got some information in the second.

The members of the caucus are also talking about a potential field hearing, which would be the second hearing on UAPs since whistleblower David Grusch stepped forward with his allegations.